TM 10-4320-344-242.21.49 RockerArm(Valve)Adjustment, Model609-A.This task covers:2.21.49.1 Cold Engine Valve2.21.49.2 Warm Engine ValveAdjustmentAdjustmentINITIAL SETUPToolsGeneral Safety InstructionsGeneral Mechanic’s AutomotiveDo not work on equipment that is notTool Kit, Appendix B, Sectionsecurely stabilized to prevent rollingIII, Item 1o r s l i d i n g.Equipment ConditionsDo not work on equipment without follow-ing standard shop safety practices.Pumping station shut down, TM 10-4320-344-10.Cylinder Head Cover removed, paragraph2 .21 .47.(Cold Adjustment Only.)2.21.49.1 ColdEngineValveAdjustment.Figure 2-164.Valve Adjustment, Model 609-A.Cylinder is at top dead center (TDC) when both intake and exhaust valves aref u l l y c l o s e d.a .Rotate crankshaft until cylinder no. 1 is at TDC.b .Insert 0.016-0.017 (0.4-0.425 mm) feeler gauge (Figure 2-164, 1) betweenrocker arm (2) and intake valve stem (3).c .Adjust setting screw (4) until rocker arm (2) just touches feeler gauge (1).2-368
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